Gigabyte Radeon HD 7970 3GB - showing up as FirePro D700 in Luxmark 2.1
Tony -
This seems low - my un-modded 7950s are beating your 7970 (ignoring the fact I have two of them). I got a big speed boost when I did the NVRAM iMessage fix which seemed to enabled by cards power management (the fans spin up after, not before).
Otherwise, are you being hindered by being recognised as a D700 and the math it is doing is more accurate? I heard one of the big differences with FirePros was the driver traded speed for accuracy.
Gareth
I had problems with 7870 - not used at full power but it was solved by changing the definitions from MacPro 3,1 to iMac 12,2 - the NVRAM "trick" had NO effect on my system.
I had problems with 7870 - not used at full power but it was solved by changing the definitions from MacPro 3,1 to iMac 12,2 - the NVRAM "trick" had NO effect on my system.
In all honesty, MacPro should only be used as a last option; it is always best to match up your system with what best matches a real Mac. If you have an unsupported CPU (AMD) or an older system, MacPro is your best choice, otherwise you will not get proper CPU and GPU power management, regardless of your SSDT or DSDT.